- Receiver waterproof to IP68 can be submerged in water for long periods; transmitter waterproof to IP54 can handle splashes and accidental drops into the water
- 9 channels, up to 9 groups can be run in the same area
- Simple and intuitive operation
- Receiver is bone-conductive, comfortable and lightweight (39 g)
-Transmitter with built-in microphone, and lavalier microphone 2 options for use
-Supports both audio and microphone input simultaneously
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30-Day Money-Back Guarantee
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3-Year Warranty
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Description
The TT120 underwater communication system, with its excellent waterproof technology, ultra-stable signal, and convenient and easy-to-use design, effectively solves your communication problems during all kinds of activities on and off the water.
It consists of a transmitter and one or more pairs of headset receivers, with the speaker speaking through the transmitter and the listener listening clearly through the headset receivers. The kit can be flexibly expanded to include more receivers.
9 Channels
The waterproof wireless tour guide system allows 9 groups in the same area to use it simultaneously, and different groups can use different channels without interfering.
Comfortable and robust headset receiver
The receiver uses bone conduction so that the transmitted sound can be heard even if the headset is not in the ear, but outside the ear (earlobe to head contact). This is a completely safe method of transmitting sound that allows visitors to hear the speaker's voice while still being able to hear the sounds around them. Transmission is always perfect whether the receiver is below or above the waterline.
Wide communication range
This wireless audio guide system has a transmission range of up to 120 meters above the water surface and up to 50 meters in underwater environments of 1.5-2 meters.
Built-in lithium battery
Transmitter fully charged in 5 hours for 10 hours of operation; Receiver fully charged in 3 hours for 5 hours of operation.
Wearing style
The transmitter offers 2 wearing styles, you can hang the device on your belt via the clip or around your neck via the lanyard. The receiver features an ergonomic headset design for a perfect fit and comfort.
One-touch mute transmitter
Simply press the power button on the transmitter briefly to pause the audio transmission. This is useful in situations where the guide needs to communicate privately or take a short break. During the mute period, visitors will not hear any sound. Click the mute button again to return to voice transmission mode.
Magnetic charging
Both the transmitter and receiver use magnetic charging, which allows the charging head to be quickly and accurately aligned and connected to the charging port, easy to use, avoiding frequent insertion and removal of the interface wear and tear, poor contact.
User-friendly waterproof tour guide system:
- The underwater communication system is designed with large buttons to ensure easy pressing.
- The volume of the receiver is adjustable so that users with different hearing levels can hear commands clearly.
- The transmitter supports the connection of external audio devices that can be used to play pre-recorded instructional audio or background music to the receiver.
Multiple applications for wireless underwater communication systems
The TT120 underwater communication system, with its excellent waterproof technology, ultra-stable signal, and convenient and easy-to-use design, effectively solves your communication problems during all kinds of activities on and off the water.
It consists of a transmitter and one or more pairs of headset receivers, with the speaker speaking through the transmitter and the listener listening clearly through the headset receivers. The kit can be flexibly expanded to include more receivers.
9 Channels
The waterproof wireless tour guide system allows 9 groups in the same area to use it simultaneously, and different groups can use different channels without interfering.
Comfortable and robust headset receiver
The receiver uses bone conduction so that the transmitted sound can be heard even if the headset is not in the ear, but outside the ear (earlobe to head contact). This is a completely safe method of transmitting sound that allows visitors to hear the speaker's voice while still being able to hear the sounds around them. Transmission is always perfect whether the receiver is below or above the waterline.
Wide communication range
This wireless audio guide system has a transmission range of up to 120 meters above the water surface and up to 50 meters in underwater environments of 1.5-2 meters.
Built-in lithium battery
Transmitter fully charged in 5 hours for 10 hours of operation; Receiver fully charged in 3 hours for 5 hours of operation.
Wearing style
The transmitter offers 2 wearing styles, you can hang the device on your belt via the clip or around your neck via the lanyard. The receiver features an ergonomic headset design for a perfect fit and comfort.
One-touch mute transmitter
Simply press the power button on the transmitter briefly to pause the audio transmission. This is useful in situations where the guide needs to communicate privately or take a short break. During the mute period, visitors will not hear any sound. Click the mute button again to return to voice transmission mode.
Magnetic charging
Both the transmitter and receiver use magnetic charging, which allows the charging head to be quickly and accurately aligned and connected to the charging port, easy to use, avoiding frequent insertion and removal of the interface wear and tear, poor contact.
User-friendly waterproof tour guide system:
- The underwater communication system is designed with large buttons to ensure easy pressing.
- The volume of the receiver is adjustable so that users with different hearing levels can hear commands clearly.
- The transmitter supports the connection of external audio devices that can be used to play pre-recorded instructional audio or background music to the receiver.
Multiple applications for wireless underwater communication systems
Spec
|
Transmitter |
|
|
Size |
260*50*23mm |
|
Weight |
158g |
|
Battery |
Li-ion Battery, Model: 123658, 3500mAh |
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Nominal Battery Voltage |
3.7V |
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Transmit Power |
50 nW max |
|
Signal-to-Noise Ratio |
63dB Stereo SNR |
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Frequency |
97-101MHz |
|
Frequency Response Range |
40Hz-15KHz |
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Number of Channels |
9CH |
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Channel Spacing |
200KHz |
|
Distortion |
0.1% THD@STEREO, ∆f = 67.5 kHz |
|
Operating Time |
Approximately 10h |
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Transmission Distance |
120m in the open water environment；50m in an underwater environment at depths of 1.5m to 2m； |
|
Charging Time |
Approximately 5h |
|
Waterproof Rating |
IP54 |
|
Receiver |
|
|
Size |
130*95*50mm |
|
Weight |
39g |
|
Frequency |
97-101MHz |
|
Battery |
Li-ion Battery, Model: 521333, 270mAh |
|
Nominal Battery Voltage |
3.7v |
|
Operating Time |
Approximately 5h |
|
Charging Time |
Approximately 3h |
|
Waterproof Rating |
IP68 |
Package Includes
| 1TX+10RX | 1x transmitter, 10x receiver, 1x lavalier microphone, 1x headworn microphone, 1x detachable back clip, 10x earplug, 11x USB charging cable, 1 x lanyard, 1x user manual |
| 1TX+15RX | 1x transmitter, 15x receiver, 1x lavalier microphone, 1x headworn microphone, 1x detachable back clip, 15x earplug, 16x USB charging cable, 1 x lanyard, 1x user manual |
| 1TX+20RX | 1x transmitter, 20x receiver, 1x lavalier microphone, 1x headworn microphone, 1x detachable back clip, 20x earplug, 21x USB charging cable, 1 x lanyard, 1x user manual |
FAQ
Q: What is the warranty policy for this TT120 waterproof wireless tour guide system?
A: We support 30-day no-reason returns and a 2-year warranty.
Reviews
Customer Reviews
Swimming Team in Korea
Jan 24, 2026
The coach can send the messages to the team members clearly inside the water, and they can focus on training. The simple and strong functionality of the transmitter, transmission range inside the water and the durability satisfies the team can coaches. Especially the voice is crystal clear even inside the water.
Richard Otto
Jul 06, 2025
The TT120 greatly improved our water tourism experience, whether it was yachting, SUP surfing, or underwater activities, the communication was clear and stable, without any interference at all, which greatly enhanced the fun of the activities.
Carter
Jul 04, 2025
This device perfectly solves the inconveniences in my current swimming training process, such as poor communication. It can also teach multiple groups at the same time. Students do not feel any discomfort when wearing it. I will recommend it to other friends.
Joe Griffith
Jul 03, 2025
We used the TT120 system during sailing competitions and it performed very stably, with clear sound quality and no dropouts during long water activities.
Aaliyah
Jun 28, 2025
From coaches to students, it is very simple to turn on, pair, and switch channels. The coach can use it after 2 minutes of training, and the students can wear it and turn it on by themselves. There is no need for complicated settings, which saves time and effort.
Luke jessop
Jun 25, 2025
The tt120 receiver weighs only 39 grams, making it easy to carry and suitable for all kinds of outdoor and water activities. We really liked its lightness and comfort when sailing at sea.
Mason Carter
Jun 25, 2025
9 channels can support multiple training groups at the same time, and the team training does not interfere with each other, which is especially suitable for swimming training classes.
Jack
Jun 23, 2025
The most feared thing about listening to instructions underwater is the interference of water sound. This bone conduction transmits sound very clearly, students can hear every technical point clearly, and correct movements more accurately.
Hailey
Jun 23, 2025
The receiver is only 39 grams! After wearing it, you can hardly feel its existence, turning, pushing against the wall, and various swimming styles are completely unaffected. Children will not feel heavy or pressure on their heads when wearing it, and the training experience is greatly improved.
Alexander
Jun 22, 2025
The transmitter operation buttons are large and simple, which can guide underwater students in real time, with better teaching effects and rapid progress of students.
Gigi Bunnell
Jun 21, 2025
The receiver is waterproof to IP68 and can be used underwater for a long time; the transmitter is waterproof to IP54, so it is completely fine even if it accidentally falls into the water.
Zoey
Jun 19, 2025
We often have several classes at the same time in our swimming pool. In the past, coaches would talk to each other. TT120 has 9 channels. We have multiple groups taking classes together, each teaching their own, and the channels are independent and clear without interfering with each other.
Oliver James
Jun 19, 2025
The receiver is IP68 waterproof, so there is no need to worry about water ingress at all. Even training in deep water is stress-free and it is very safe to use.
Benjamin Scott
Jun 17, 2025
The transmitter has clear buttons and IP54 waterproof and splash-proof. It is very convenient for coaches to guide by the water without frequently debugging the equipment.
Isaac
Jun 16, 2025
In the past, training relied entirely on shouting, and students couldn't hear clearly when their voices were hoarse. Now with this interpreter, students' underwater instructions are directly transmitted to their ears (bone conduction), the sound is clear and does not affect others, the coach is relieved, the students are more focused, and the teaching efficiency is doubled.
Liam Thompson
Jun 15, 2025
The bone conduction receiver is only 39g, and you can hardly feel the weight when wearing it on your head. You won't feel tired even if you swim for a long time. The design is really user-friendly.
Rhiawna Bracci
Jun 13, 2025
As a competitive swim coach, I've tried every communication device out there. The TT120's bone conduction delivers crisp instructions even during flip turns. The 9-channel system lets me run separate drills for sprinters and distance swimmers simultaneously. Game-changer for my elite squad.
Grace
Jun 10, 2025
I recommend it to all my students, which effectively improves the teaching quality. I walk around the pool with the transmitter, and give instructions whenever I see a problem. Students can hear and adjust their movements in the water immediately.
John Johnson
Mar 01, 2025
There was a slight problem with the logistics, but everything else was fine
James Smith
Feb 27, 2025
Easy to operate, waterproof, clear sound
Ashley Taylor
Feb 23, 2025
I tried it out at first, but now I completely rely on it for my swimming lessons. The bone conduction earphones make communication easy, and I can give instructions no matter how intense the training is. It is also waterproof and has no problem at all. Highly recommended for all water sports enthusiasts!
William Thomas
Feb 18, 2025
As a swimming coach, I have significantly improved my training results after using this wireless communication system. The instructions are clearly communicated, even underwater. My students have given it great feedback, especially when they are training in a team, and they can better understand the movements. Most importantly, it is comfortable so I don't feel any discomfort during long-term use. I will report back here if anything happens, but so far, this actually works.
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